(19)
(11) EP 3 328 792 A1

(12)

(43) Date of publication:
06.06.2018 Bulletin 2018/23

(21) Application number: 16745723.3

(22) Date of filing: 29.07.2016
(51) International Patent Classification (IPC): 
C01F 11/18(2006.01)
B01F 3/04(2006.01)
(86) International application number:
PCT/EP2016/068188
(87) International publication number:
WO 2017/021313 (09.02.2017 Gazette 2017/06)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30) Priority: 31.07.2015 EP 15179382
05.01.2016 US 201662274873 P

(71) Applicant: Omya International AG
4665 Oftringen (CH)

(72) Inventors:
  • SPIEGEL, Holger
    9523 Villach (AT)
  • KREUGER, Wolfgang
    9181 Feistritz/Rosental (AT)
  • SKRZYPCZAK, Mathieu
    Terrace Park, Ohio 45174 (US)
  • WENK, Joe
    Kingsport, Tennessee 37664 (US)
  • DALTON, Michael
    4132 Muttenz (CH)
  • SALONEN, Aaro
    4144 Arlesheim (CH)
  • MAURER, Marc
    68128 Village-Neuf (FR)
  • GANE, Patrick A.C.
    4852 Rothrist (CH)
  • RIDGWAY, Catherine Jean
    4812 Mühlethal (CH)

(74) Representative: Boos, Melanie 
Maiwald Patentanwalts- und Rechtsanwaltsgesellschaft mbH Elisenhof Elisenstraße 3
80335 München
80335 München (DE)

   


(54) PRECIPITATED CALCIUM CARBONATE WITH IMPROVED RESISTANCE TO STRUCTURAL BREAKDOWN